package com.hmdp.service.impl;

import cn.hutool.json.JSONUtil;
import com.hmdp.dto.Result;
import com.hmdp.entity.ShopType;
import com.hmdp.mapper.ShopTypeMapper;
import com.hmdp.service.IShopTypeService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.List;

import static com.hmdp.utils.RedisConstants.CACHE_SHOPTYPE_KEY;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
public class ShopTypeServiceImpl extends ServiceImpl<ShopTypeMapper, ShopType> implements IShopTypeService {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    @Override
    public Result queryAll() {
        String listStr = stringRedisTemplate.opsForValue().get(CACHE_SHOPTYPE_KEY);
        if(!StringUtils.isEmpty(listStr)){
            List<ShopType> list = JSONUtil.toList(listStr, ShopType.class);
            return Result.ok(list);
        }
        List<ShopType> list = query().orderByAsc("sort").list();
        if(list.isEmpty()){
            return Result.fail("没有商店类型");
        }
        stringRedisTemplate.opsForValue().set(CACHE_SHOPTYPE_KEY,JSONUtil.toJsonStr(list));
        return Result.ok(list);

    }
}
